Enrichment factors and patterns of tight oil in the 8th oil group of the Yanchang Formation， Dingbian-Fuxian area， Ordos Basin
Weitao WU, Tianyu LI, Xinzhi YAN, Kai ZHOU, Lu YIN, Lei CAO
Oil & Gas Geology . 2025, (5): 1392 -1409 .  DOI: 10.11743/ogg20250502